Louis Walsh (born Michael Louis Vincent 5 August 1952, in Kiltimagh, County Mayo) is an Irish music manager and judge on the British television talent show The X Factor.
As of July 2009, his acts have totalled 30 UK Number 1 singles, the first being Words by Boyzone and the 30th being Beat Again by JLS.
While working for a record label in Ipswich, Walsh spotted the talents of singer/songwriter Johnny Logan. Walsh persuaded Logan to enter the 1980 Irish National Song Contest, which he won. This meant automatic inclusion in the 25th Eurovision Song Contest, which Logan won in front of 500 million TV viewers.